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AD5647R Datasheet(PDF) 9 Page - Analog Devices

No. de Pieza. AD5647R
Descripción  Dual, 12-/14-/16-Bit nanoDACs with 5ppm/C On-Chip Ref, I2C Interface
Descarga  30 Pages
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Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
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AD5647R Datasheet(HTML) 9 Page - Analog Devices

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Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Rev. PrA. | Page 9 of 30
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
VOUTA
VOUTB
GND
LDAC
CLR
VREFIN/VREFOUT
VDD
SDA
SCL
ADDR
1
2
3
4
5
10
9
8
7
6
AD5627(R)
AD5647R
AD5667(R)
TOP VIEW
(Not to Scale)
NOTE. VREFOUT IS AVAILABLE ONLY ON -R VERSIONS
Figure 3. Pin Configuration
Table 7. Pin Function Descriptions
Pin No.
(10-pin)
Mnemonic
Description
1
VOUTA
Analog output voltage from DAC C. The output amplifier has rail-to-rail operation.
2
VOUTB
Analog output voltage from DAC B. The output amplifier has rail-to-rail operation.
3
GND
Ground reference point for all circuitry on the part.
4
LDAC
Active low load DAC pin.
5
CLR
Asynchronous clear input. The
CLR input is falling edge sensitive. While CLR is low, all LDAC pulses
are ignored. When
CLR is activated, zero scale is loaded to all input and DAC registers. This clears the
output to 0 V. The part exits clear code mode on the 24th falling edge of the next write to the part. If
CLR is activated during a write sequence, the write is aborted.
6
ADDR
Three-state address input. Sets the two least significant bits (Bit A1, Bit A0) of the 7-bit slave address.
7
SCL
Serial clock line. This is used in conjunction with the SDA line to clock data into or out of the 16-bit
input register.
8
SDA
Serial data line. This is used in conjunction with the SCL line to clock data into or out of the 16-bit
input register. It is a bidirectional, open-drain data line that should be pulled to the supply with an
external pull-up resistor.
9
VDD
Power supply input. These parts can be operated from 2.7 V to 5.5 V, and the supply should be
decoupled with a 10 μF capacitor in parallel with a 0.1 μF capacitor to GND.
10
VREFIN/VREFOUT
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 have a common pin for reference input and
reference output. The internal reference and reference output are only available on suffix ---R
versions. When using the internal reference, this is the reference output pin. When using an external
reference, this is the reference input pin. The default for this pin is as a reference input.


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